Fitting for airplanes.



J. W MILLER.

mmm FOR AEROPLANES NPLICATON FILED JULY 3,1918.

INVENTOR Jnhnwi-Mi'ller". l

The width UNITED STATES PATENT clarion.

JOHN MILEER, OF,SEATTLZE,' WASHINGTON, ASSIGNOB TO BOEING AIIQILANE eoiurAnY, or snarrnn, wasnme'ron,

A CORPORATION OF WASHINGTQN.

FITTING FOR AIRPLANE S.

0 all whom it may concern .1 :Be it known that I, JOHN W. MILLER, a

- citizen of the United States, and resident of the city of Seattle, county of King, Stateof Washington, have invented certain new and useful Improvements in Fittings for ,An': planes, of which the following is a specification.

My inventionrelates to a fitting designed for employment in the construction of airplanes and particularly as a means for supporting a hinged strut and certain tension -members of the framework.

The object of my invention is to furnish a fitting for these purposes which is light in weight,'-strong and simple in construction, and whichhas inany advantages in convenience of manufacture, application and use and in the manner in which it takes care of the connectionsdesired. v

The features of my'invention upon which .I desire a' patent will be defined by the claim terminating this specification; The accompanying drawings show my invention embodid in the type of construction which I now most prefer to use.

7 Figure 1 is a side view of this fitting, showing with it, aportion of the bolts by which it is secured in place upon the main framework of the airplane, and also showing in dotted lines the manner of connecting one of the tension members thereto.

Fig. 2 is a view of the outer face of this fitting. v

Figs. 3 and 4: are end views of the fitting taken respectively from opposite ends thereofl' is of rolled steel and is stamped and bent into shape in the manner which will be hereinafter described. In the particular use for which this fitting has been designed, it is intended to be mounted upon a bar of which the adjacent sides are not at right angles. of the bar to which it is to be secured is indicated by the distance between the securing bolts 7, shown in 1, which Specification of letters Patent.

from the plate the bolts when in use.

unnecessary to provide beveled or inclined Patented Jan. a mic.

- Application filed July 3, 1918. Serial No. 243,211.

bolts lie close against the outer surfaces of the larger sides of this main frame bar.

To furnish a proper seat for the heads and nuts of the securing bolts 7 I stain up 1, inclined bosses 2. hese have their surfaces which engagethe bolt heads, at right angles to the axis occupied by In consequence. it is washers beneath the heads. Further, these seats being integral with the base p ates,

there is no tendency in the bolt to slide laterally on the plate, due to an inclined surface between plate and washer.

At one end of the base plate 1, I form an ear 1 1 which is perforated for the reception of a bolt, or other member, by which a tension stay may be connected therewith. a connection and the end of a tension stay,

' is indicated by dotted lines in Fig. 1. This car 11 is bent up into a position at an angle with the main body of the base plate, in orderto be alined with the direction of the pull of this tension member.

At one side of the base plate, 1, isa'v large double car, 12. This might, of course, be two separate ears as desired, but I prefer to have them integrally joined together so as to make one double ear and provide it with ,two perforations 13, for the receptionof bolts, by which the tension members may be connected therewith. This ear jis also bent upward at an angle, as clearly shown in Figs.

3 and 4:.

Upon the outer face of the base plate are secured certain members which form a pair I 'follows:

A U-shaped stampingflreut and bent from sheet steel, has the base of tHe U. welded or brazed, or both welded and brazed, to the surfaces of the base side of this U- hape forcing member,

plates 31 and 32. These are also welded brazed to the outer faces of the U-shaped member 3 and to the outer face of the base plate 1, so that these members and the base plate become in etl'ectone integral body. 105

By this construction, ears are provided Such The manner 1 late 1. Ate ch outer member 3, i figeinconsistmg of the L-sha ed 100 wl'iich '21 re sn'fficient body to be strong and v to furnish a. reasonable wearing surface for the pivotei pm The manner of securing these to the base piste is also such that great.

strength and reliability may be secured. The plate 31 which is at the side of the fitting next to the cars 12, has its end 83 extending 4 u'rlil-a short distance beyond the point 14 at ich the bend is made between the base plate and the cars 12. This bend, in reality, is'inward from the true base of the ears 12 as is clearly seen in Fig. 2. This reinforcing strengthens the ears 12 against de bendin A 'fittin for this purpose may be macfe after the esign shown and described, very cheaply and at the same time it will be very plate and the other to the outer faces of the c U-shaped piece. Signed at Seattle, Washington, this 27th day of June 1918.

JOHN w; MILLER. 

